“…The use of crowd‐sourced observations in atmospheric sciences, NWP included, is becoming increasingly widespread. In recent years, several study areas of interest have emerged, such as the use of pressure observations from smartphones (Hintz et al, 2019; Mass & Madaus, 2014; McNicholas & Mass, 2018), the quantification of the urban heat island effect (Meier et al, 2017; Steeneveld et al, 2011), the use of crowd‐sourced wind observations (Droste et al, 2020; Hintz et al, 2020), the use of vehicle observations for assimilation in NWP models (Siems‐Anderson et al, 2020), and the use of PWSs for post‐processing of NWP forecasts (Nipen et al, 2020). Here, we are using crowd‐sourced observations from PWSs in order to post‐process near‐surface temperature forecasts.…”